swell vs dandy

swell and dandy both are nouns.

Word	Noun	Adjective	Verb	Adverb
swell	Yes	Yes	Yes	No
dandy	Yes	Yes	No	No

As adjectives, swell and dandy are synonyms defined as:

Other synonyms of swell include bang-up, bully, corking, cracking, great, groovy, keen, neat, nifty, not bad, old, peachy, slap-up, smashing.

As nouns, swell and dandy are synonyms defined as:

swell and dandy: a man who is much concerned with his dress and appearance

Other synonyms of swell include beau, clotheshorse, dude, fashion plate, fop, gallant, sheik.

swell (noun)	dandy (noun)
a crescendo followed by a decrescendo	a sailing vessel with two masts; a small mizzen is aft of the rudderpost
the undulating movement of the surface of the open sea	a man who is much concerned with his dress and appearance
a rounded elevation (especially one on an ocean floor)
a man who is much concerned with his dress and appearance

swell (adjective)	dandy (adjective)
excellent	excellent

swell (verb)	dandy (verb)
expand abnormally
cause to become swollen
increase in size, magnitude, number, or intensity
come up, as of a liquid
become filled with pride, arrogance, or anger
come up (as of feelings and thoughts, or other ephemeral things)